sacroanterior position

sa·cro·an·te·ri·or po·si·tion (SA),

a breech presentation of the fetus with the sacrum under the symphysis or rotated to the right (right sacroanterior, RSA) or to the left (left sacroanterior, LSA) acetabulum of the mother.
Farlex Partner Medical Dictionary © Farlex 2012

sa·cro·an·te·ri·or po·si·tion

(SA) (sā'krō-an-tēr'ē-ŏr pŏ-zish'ŏn)
A breech presentation of the fetus with the sacrum pointing to the right (right sacroanterior, RSA) or to the left (left sacroanterior, LSA) acetabulum of the mother.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
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